DCEO Engineer, Data Center Engineering Operations

Amazon Web Services is looking for motivated, rigorous, and technically passionate individuals to join our teams as Data Center Engineering Operations (DCEO) Engineers. This position offers an exciting opportunity to join a team dedicated to the reliability and availability of AWS critical infrastructure, serving millions of customers worldwide. AWS Infrastructure Services (AIS) AWS Infrastructure Services is responsible for the design, planning, delivery, and operation of all AWS global infrastructure. In other words, we are the people who keep the cloud running. We support all AWS data centers as well as all the servers, storage equipment, networks, power systems, and cooling systems that ensure our customers have continuous access to the innovations they rely on. We work on the most complex problems, with thousands of variables impacting our operations, and we are looking for talent who want to help us tackle these challenges. You will join a diverse team of software, hardware, and network engineers, critical systems specialists, security experts, operations managers, and other essential roles. You will collaborate with colleagues across AWS to maintain the highest safety standards while delivering seemingly infinite capacity at the lowest possible cost for our customers. You will thrive in an inclusive culture that welcomes bold ideas and empowers you to see them through. We are currently looking for a DCEO Engineer to provide technical support for critical infrastructure within one of our data centers. This position contributes to ensuring the availability and reliability of all electrical and mechanical infrastructure in a data center environment. This equipment supports critical servers and must maintain an uptime rate greater than 99.999%. The role requires a self-directed individual capable of taking initiative and proposing effective solutions to complex technical problems. Successful candidates will have a direct and immediate impact on the resilience, efficiency, and capacity of our facilities, particularly by ensuring the maintenance, operation, and troubleshooting of critical infrastructure: diesel backup generators and associated fuel systems, three-phase electrical systems (switchboards, UPS, PDUs, batteries, etc.), cooling systems (CRAC units, centrifugal chillers, cooling towers, chemical water treatment, air handling units), pumps, and motors. Key job responsibilities • Operate and maintain all mechanical, electrical, and HVAC (heating, ventilation, air conditioning) equipment in the data center. • Supervise contractors performing maintenance or preventive maintenance operations. • Develop intervention plans for emergency repairs on critical assets. • Work independently with minimal direct supervision. • Provide on-call support and participate in a rotation schedule based on operational needs. • Apply basic support concepts: ticketing systems, root cause analysis, task prioritization. • Perform on-site shifts according to the defined schedule. • Strictly comply with all physical security procedures and policies. • Ensure strict adherence to safety procedures during the execution of work. • Perform rack power installation, PDU replacement, and rack ATS replacement. • Verify electrical and cooling capacities before any new rack installation. • Create and close work orders with appropriate data (labor hours, equipment maintenance, parts used) in the asset management system. • Record state changes in critical infrastructure as part of corrective and preventive maintenance operations. • Perform quality, performance, safety, and reliability testing of products, equipment, and processes. • Serve as first-line responder for troubleshooting electrical and mechanical equipment: air handling units (AHUs), chillers, cooling towers, chemical treatment systems, pumps, motors, variable frequency drives (VFDs), and building management systems (BMS). • Define and maintain the highest safety